AVIXA Recognized AV Technologist Practice Test

A compressor in an audio system primarily serves the function of reducing the dynamic range of audio signals. This means it minimizes the difference between the loudest and quietest parts of an audio signal. By doing so, it helps to control peaks in the audio, preventing distortion and clipping in louder signals and allowing quieter passages to be more audible without overwhelming the listener with sudden loud sounds.

This function is particularly important in many audio applications, such as live sound reinforcement and recording, where maintaining a balanced overall sound is crucial. Compressors can make the mix sound tighter and more polished by ensuring that different elements of the mix sit well together.

The roles of enhancing low frequencies, increasing overall volume, or creating sound effects do not accurately describe the primary function of a compressor, as those tasks are better suited to equalizers, amplifiers, and effects processors, respectively.